/*
 * Copyright 2016 Elvis Hew
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.elvishew.xlog.interceptor;

import com.elvishew.xlog.LogItem;

import java.util.Arrays;

/**
 * Filter out the logs with a tag that is in the blacklist.
 *
 * @since 1.3.0
 */
public class BlacklistTagsFilterInterceptor extends AbstractFilterInterceptor {

    private Iterable<String> blacklistTags;

    /**
     * Constructor
     *
     * @param blacklistTags the blacklist tags, the logs with a tag that is in the blacklist will be
     *                      filtered out
     */
    public BlacklistTagsFilterInterceptor(String... blacklistTags) {
        this(Arrays.asList(blacklistTags));
    }

    /**
     * Constructor
     *
     * @param blacklistTags the blacklist tags, the logs with a tag that is in the blacklist will be
     *                      filtered out
     */
    public BlacklistTagsFilterInterceptor(Iterable<String> blacklistTags) {
        if (blacklistTags == null) {
            throw new NullPointerException();
        }
        this.blacklistTags = blacklistTags;
    }

    /**
     * reject
     * {@inheritDoc}
     *
     * @param log log
     * @return true if the tag of the log is in the blacklist, false otherwise
     */
    @Override
    protected boolean reject(LogItem log) {
        if (blacklistTags != null) {
            for (String disabledTag : blacklistTags) {
                if (log.tag.equals(disabledTag)) {
                    return true;
                }
            }
        }
        return false;
    }
}
